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Decouples evaluation of a piecewise_function from the function itself (#5344)

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Richard Brice
2024-09-10 10:11:17 -07:00
committed by GitHub
parent 67a7e713b2
commit cc7171060f
17 changed files with 240 additions and 221 deletions
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src/ifcgeom/taxonomy.h
+2 -33
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@@ -347,8 +347,6 @@ typedef item const* ptr;
struct implicit_item : public geom_item {
DECLARE_PTR(implicit_item)
using geom_item::geom_item;
virtual item::ptr evaluate() const = 0;
};
struct piecewise_function_impl; // forward declaration
@@ -357,14 +355,12 @@ typedef item const* ptr;
using spans_t = std::vector<std::pair<double, std::function<Eigen::Matrix4d(double u)>>>;
piecewise_function(double start, const spans_t& s, ifcopenshell::geometry::Settings* settings = nullptr, const IfcUtil::IfcBaseInterface* instance = nullptr);
piecewise_function(double start, const std::vector<piecewise_function::ptr>& pwfs, ifcopenshell::geometry::Settings* settings = nullptr, const IfcUtil::IfcBaseInterface* instance = nullptr);
piecewise_function(double start, const spans_t& s, const IfcUtil::IfcBaseInterface* instance = nullptr);
piecewise_function(double start, const std::vector<piecewise_function::ptr>& pwfs, const IfcUtil::IfcBaseInterface* instance = nullptr);
piecewise_function(piecewise_function&&) = default;
piecewise_function(const piecewise_function&);
virtual ~piecewise_function();
const ifcopenshell::geometry::Settings* settings_ = nullptr;
const spans_t& spans() const;
bool is_empty() const;
double start() const;
@@ -379,33 +375,6 @@ typedef item const* ptr;
return boost::hash<decltype(v)>{}(v);
}
/// @brief returns a vector of "distance along" points where the evaluate function computes loop points
std::vector<double> evaluation_points() const;
/// @brief returns a vector of "distance along" points between ustart and uend
/// @param ustart starting location
/// @param uend ending location
/// @param nsteps number of steps to evaluate
std::vector<double> evaluation_points(double ustart, double uend, unsigned nsteps) const;
/// @brief evaluates the piecewise function between start and end
/// evaluation point step size is taken from the settings object
item::ptr evaluate() const override;
/// @brief evaluates the piecewise function between ustart and uend
/// if ustart and uend are out of range, the range of values evaluated
/// are constrained to start_ and start_+length_
/// @param ustart starting location
/// @param uend ending location
/// @param nsteps number of steps to evaluate
/// @return taxonomy::loop::ptr
item::ptr evaluate(double ustart, double uend, unsigned nsteps) const;
/// @brief evaluates the piecewise function at u
/// @param u u is constrained to be between start_ and start_+length
/// @return 4x4 placement matrix
Eigen::Matrix4d evaluate(double u) const;
private:
// note: it would be better if this were a std::unique_ptr, but that requires having the full definition
// of piecewise_function_impl in this header file, which defeats the purpose of the PIMPL idiom.